package cn.ml.sboot11.config;

import cn.ml.sboot11.entity.Student;
import cn.ml.sboot11.service.StudentService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.Async;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import org.springframework.stereotype.Component;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.concurrent.Executor;
import java.util.concurrent.ThreadPoolExecutor;

@Slf4j
//@Component
//@Configuration
//@EnableScheduling //开启定时任务
//@EnableAsync  //开启多线程
public class AsyncConfiguration {

    @Autowired
    private StudentService studentService;

    @Bean("doExecutor")
    public Executor doSomethingExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        //ThreadPoolExecutor executor1 = new ThreadPoolExecutor();
        // 核心线程数：线程池创建时候初始化的线程数
        executor.setCorePoolSize(10);
        // 最大线程数：线程池最大的线程数，只有在缓冲队列满了之后才会申请超过核心线程数的线程
        executor.setMaxPoolSize(20);
        // 缓冲队列：用来缓冲执行任务的队列
        executor.setQueueCapacity(500);
        // 允许线程的空闲时间60秒：当超过了核心线程之外的线程在空闲时间到达之后会被销毁
        executor.setKeepAliveSeconds(60);
        // 线程池名的前缀：设置好了之后可以方便我们定位处理任务所在的线程池
        executor.setThreadNamePrefix("do-long-");
        // 缓冲队列满了之后的拒绝策略：由调用线程处理（一般是主线程）
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.DiscardPolicy());
        executor.initialize();
        return executor;
    }
    //每12秒执行一次
    @Async
    @Scheduled(fixedRate = 1000 * 12)
    public void reportCurrentTime(){
        log.info("Scheduling: Time: "+ dateFormat().format(new Date()) + "\r\n线程：" + Thread.currentThread().getName());
        System.out.println("--------------------------------------------------------");
    }
    //每10秒执行一次
    @Async
    @Scheduled(cron = "0/10 * * * * ?")
    public void reportCurrentByCron(){
        Thread.currentThread().setName("kkk");
        log.info("Scheduling By Cron: Time: " + dateFormat ().format (new Date ()) + "\r\n线程：" + Thread.currentThread().getName());

        /*List<Student> students = studentService.list2(null);
        for (Student student:students){
            System.out.println(student);
        }*/
        System.out.println("--------------------------------------------------------");
    }

    private SimpleDateFormat dateFormat(){
        return new SimpleDateFormat("HH:mm:ss");
    }
    //@Async
    //@Scheduled(cron = "0/10 * * * * ?")
    public void countDown(){
        try {
            studentService.countDown();
        } catch (ParseException | InterruptedException e) {
            e.printStackTrace();
        }
    }

}
